en
Download

Nature

How tall is Olympus Mons?

Olympus Mons is about 21.9 km (13.6 mi) tall.

What is measured: height above the Martian datum

Olympus Mons (21.9 km) drawn to scale beside the Golden Gate Bridge (2.74 km) and Mount Everest (8,849 m)
Drawn to scale, from left to right: Golden Gate Bridge (2.74 km), Mount Everest (8,849 m) and Olympus Mons (21.9 km).

Compare

How big is that, really?

  • About 2.5× as tall as Mount Everest
  • About 52% of the length of a marathon
  • About 8× the length of the Golden Gate Bridge
  • About 26× as tall as the Burj Khalifa
  • About 66× as tall as the Eiffel Tower

Learn

Facts about Olympus Mons

Olympus Mons is the largest known volcano in the Solar System and rises roughly 22 kilometers above Mars’s surrounding plains.

Source: NASA Solar System Exploration, Olympus Mons; Encyclopaedia Britannica, Olympus Mons

Nature

NameSizeCompared with Olympus Mons
Cho Oyu8,188 m (26,864 ft)0.37×
Makalu8,485 m (27,838 ft)0.39×
Lhotse8,516 m (27,940 ft)0.39×
Kangchenjunga8,586 m (28,169 ft)0.39×
K28,611 m (28,251 ft)0.39×
Colca Canyon10 km (6.21 mi)0.46×
Ngorongoro Crater21 km (13 mi)0.96×
Olympus Mons21.9 km (13.6 mi)this page
Fish River Canyon27 km (16.8 mi)1.2×
Grand Canyon29 km (18 mi)1.3×

Test your sense of scale

Which is bigger: Olympus Mons or Fish River Canyon?

Topics

More sizes like this